From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Programme of test bed work for O.H.C. unit B.23 outlining investigations, and noting unit B.24 is next for testing.
| Identifier | ExFiles\Box 155\2\ scan0070 | |
| Date | 2nd April 1937 | |
| 1315. To Rm.{William Robotham - Chief Engineer} ~~c.c. to Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews}~~ ~~c.c. to Rm{William Robotham - Chief Engineer}/OTS.~~ Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}6/AP.2.4.37. PROGRAMME OF TEST BED WORK. Further to memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/AP.23.3.37. No.30 Bed. O.H.C. B.23.Unit. (1) Complete exhaust system power loss investigation as outlined in previous memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/AP.23.3.37. (2) Complete chain period investigation as per memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}16.3.37. (3) Following the test of the Angus Seal gasket with the radiator in a normal position as per chassis compare with C. & A.{Mr Adams} gasket, also 'Corrujoint' (4) We know that 'Angus Seal' gasket would be O.K. for running unit in a chassis and if all the noise period can be taken out of the chain, then the gear quietening people to be instructed to quieten the timing gears. (5) Repeat ignition characteristic with the unit as at present i.e. with std. Bentley carbs. and reduced bore induction system, standard exhaust system and running on Ethyl with the spark plugs which we found O.K. to just be clear of pre-ignition troubles. (6) Are the tappets reasonably quiet when the rocker cover is tightened down if insulating washers are used.? (7) Run one hour oil consumption at 4000 R.P.M. and repeat to note if constant as the construction of this block with regard to the holding down bolts is theoretically better than a std. Bentley block with regard to distortion. We should like to complete these outstanding jobs as soon as possible to get the unit into a chassis. B.24.Unit. Following B.17 this unit will be the next on test. New parts fitted since last on the bed include - continued | ||